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(No Model.) 2 Sheets-Sheet. 1. K. H. H. LEINEWEBER.

OAR BRAKE.

Patented IVfay 12, 188;)

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UNITED STATES PATENT OFFICEQ KARL H. H. LEINEWEBER, or SOUTH CHICAGO,ILLINOIS.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 317,554, dated May 12,1885.

Application filed December 30, 1884. (No model.)

To all whom it may concern:

Be it known that I, KARL H. H. LEINE- WEBER, a subject of the Emperor ofGermany, residing at South Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in Car-Brakes, of which the following is a specification, reference being hadto the accompanying drawings.

My invention relates to an improved carbrake.

The object of the invention is to provide a simple and effective brake;and to that end it consists of the novel devices and combination ofdevices, as will be described and claimed.

Reference will be made to the accompanying drawings, in which Figure 1is a plan view of a truck; Fig. 2 a section through the same;

Figs. 3, 4, 5, parts used for shifting cars; and

Fig. 6, a detail of the draw-head.

Like letters refer to like parts in each view. A represents thelongitudinal beams of the truck-frame; A, suitable cross-pieces; B, the

wheels; and D the draw-head. Draw-head D is mounted in a frame, E, andis adapted to move therein. This frame is secured to a cross-beam, E,and a bolt, F, passes through said cross-beam and through the end of thedraw-head.

Secured to bolt F, between the rear of frame E and the rear of thedraw-head, are twosprings, a a, the former being a light spring andextending the entire length of the bolt between the points named whenthe drawhead is in its normal position, while the spring a is heavierand extends about half the distance and abuts, when no pressure isapplied to the draw-head, against the rear of frame E only. Similarsprings, 12 b, are situated upon bolt F within the draw-head, and bothabut against a head, 0, formed on the end of said bolt, the heavy springextending but about half-way of the distance, as shown. When no pressureis applied to the draw-head, the light springs a I) are sufficient tohold the drawhead in its proper position; but if the drawhead is drawnforward by the pull of the engine its end is finally brought against theend of spring b, which is sufficiently strong to stand the strain, theheavy spring a serving a like purpose when a back-pressure is applied.

Upon the lower face of the draw-head is formed a-rack', d, the teeth ofwhich mesh with a pinion, e, keyed to a shaft, G, Fig. 1, so situatedthat it will be revolved upon the forward or back movement of thedraw-head. Keyed to shaft G are pulleys f, one upon each side of thetruck. Secured to each pulley are the split ends of a rope, g, whichextends back and is secured to a lever, h. Secured to the same leveris acord,7c, which is connected also with a lever, Z, which in turn isconnected by a cord, m, to a spring, a, said spring being secured to acrossbeam, as shown. Levers hZ are pivoted each in a frame, 0, and areprovided on their lower ends each with a camhead, p. Frames 0 aremounted each at one end upon a bolt, q, secured to the central beams ofthe truck-frame, and at their opposite ends upon bolts .9, secured tosuitable cross-pieces, tov

which the brakeshoes H are secured. Bolts 8 pass through the frames, andare each provided with a head, t, against which one end of a spring, 1;,abuts, the opposite end of each of such springscontacting with the endof its frame 0, and the head of each of such bolts occupying a positionwhich will allow the camheads of levers h l to contact therewith.

The operation of the device as thus far described is as follows: Thenormal position of the brake-shoes when the car is at a standstill issuch as to contact such shoes with the wheels. If the car is startedforward the pressure applied to the draw-head draws it forward, and thesprings b bact as described. By this forward movement of the draw-headthe pinion e and its shaft G are operated through the medium of rack d.In this manner the pulleys f are partly revolved and serve through themedium of the ropes described to operate levers h Z. The cam-heads ofthese levers being thus forced against the heads of bolts 8, the beamsto which the brake-shoes are secured are operated to carry the shoesfrom the wheels. As soon as the forward pressure is removed from thedraw-head, the parts assume their normal position and the brake isapplied again.

A similar result to that above described is brought about byaback-pressure upon the draw-head.

Should the rope 9 break, the spring a will serve to keep the brake-shoesfrom contact with the wheels.

In Figs. 3, 4, 5, I have shown mechanism to be employedwhen it isdesired to shift the car on the track without attaching an engine. Asshown, the shaft G is squared on each end and protrudes out sufficientlyto receive a wrench, K.

Secured to each squared end of this shaft is a star-shaped disk, w,which rests in a socket, as shown in Fig. 1. In the face of the beam inwhich the shaft has bearing and at points between the points of thestar-disks are formed openings 00, adapted to receive the end of a pin,L. At a suitable point pin L is provided with a grooved collar, 3 intowhich one arm of disk 10 is adapted to enter.

The manner of using this part of the invention is as follows: The shaftG being partly revolved through the medium of wrench K sufficient tofree the brakes the pin L is inserted into one opening 90 and one arm ofthe disk inserted into collar '2, the pin being thus held in positionand serving to prevent the brakes being applied While the car is beingmoved. When it is again desired to apply the brakes, the pin is removedand the parts carried to their normal position by the springs.

What I claim iS 1. In a car-brake, the combination, with a draw-head, abolt passed through the rear end. thereof, light and heavy springssituated upon said bolt to the rear of the draw-head, and

ion 6 and pulleys f, of cords k, vertical levers h Z, intermediatemechanism for operating brake-shoes from the levers, and cord in andspring'n, as set forth.

4.. In a car-brake, the combination of the following elements: a shaft,brake-shoes, intermediate mechanism for operating the shoes from theshaft, a Wrench for revolving the shaft, a star-disk secured thereto,and a pin for holding the parts in any given position, as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

KARL H. H. LEINEWEBER.

Witnesses:

W. J. OLAGETT, LOUIS NOLTING.

